Period
to 18 November 2019

The following table provides summary statistics for contract job vacancies advertised in Essex with a requirement for TDD skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited TDD over the 6 months to 18 November 2019 with a comparison to the same period in the previous 2 years.

Note that daily and hourly rates are treated separately in these statistics. When calculating contractor rate percentiles, daily rates are never derived from quoted hourly rates or vice versa.

Test-Driven Development (TDD)
6 months to
18 Nov 2019
Same period 2018 Same period 2017
Rank 10 9 2
Rank change year-on-year -1 -7 +22
Contract jobs citing TDD 63 188 257
As % of all contract IT jobs advertised in Essex 11.37% 17.52% 32.70%
As % of the Processes & Methodologies category 13.76% 19.64% 36.61%
Number of daily rates quoted 49 152 197
Essex median daily rate £475 £525 £513
Median daily rate % change year-on-year -9.52% +2.44% +13.89%
10th Percentile £405 £428 £388
90th Percentile £552 £600 £600
East of England median daily rate £450 £525 £500
% change year-on-year -14.29% +5.00% +5.26%
Number of hourly rates quoted 0 4 24
Essex median hourly rate - £35.29 £62.50
Median hourly rate % change year-on-year - -43.54% +73.61%
East of England median hourly rate - £38.75 £62.50
% change year-on-year - -38.00% +71.19%

TDD is in the Processes and Methodologies category. The following table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in Essex with a requirement for process or methodology skills.

All Process and Methodology Skills
Essex
Contract vacancies with a requirement for process or methodology skills 458 957 702
As % of all contract IT jobs advertised in Essex 82.67% 89.19% 89.31%
Number of daily rates quoted 294 597 481
Essex median daily rate £450 £500 £500
Median daily rate % change year-on-year -10.00% - +42.86%
10th Percentile £185 £313 £300
90th Percentile £587 £600 £600
East of England median daily rate £425 £438 £420
% change year-on-year -2.86% +4.17% +5.00%
Number of hourly rates quoted 16 35 64
Essex median hourly rate £16.76 £16.50 £30.77
Median hourly rate % change year-on-year +1.55% -46.37% -2.33%
10th Percentile £12.25 £12.55 £11.98
90th Percentile £39.75 £47.50 £63.75
East of England median hourly rate £17.75 £17.84 £27.50
% change year-on-year -0.50% -35.13% -11.29%

TDD
Job Vacancy Trend in Essex

Job postings citing TDD as a percentage of all IT jobs advertised in Essex.

Job vacancy trend for TDD in Essex

TDD
Contractor Daily Rate Trend in Essex

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing TDD in Essex.

Contractor daily rate trend for TDD in Essex

TDD
Contractor Daily Rate Histogram in Essex

The daily rate distribution of IT jobs citing TDD in Essex over the 6 months to 18 November 2019.

Contractor daily rate histogram for TDD in Essex

TDD
Contractor Hourly Rate Trend in Essex

This chart provides the 3-month moving average for contractor hourly rates quoted in IT jobs citing TDD in Essex.

Contractor hourly rate trend for TDD in Essex

TDD
Contract Job Locations in Essex

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing TDD within the Essex region over the 6 months to 18 November 2019. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 6 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Past 6 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
Southend-on-Sea +13 25 £523 -
Harlow +2 3 £450 -5.26%
Chelmsford -4 3 £400 -27.27% 5
Ongar - 1 £375 -
TDD
East of England

For the 6 months to 18 November 2019, IT contractor jobs citing TDD also mentioned the following skills in order of popularity. The figures indicate the absolute number co-occurrences and as a proportion of all contract job ads across the Essex region with a requirement for TDD.

1 52 (82.54%) Agile Software Development
2 39 (61.90%) Java
3 30 (47.62%) Scrum
4 29 (46.03%) Oracle
4 29 (46.03%) BDD
5 25 (39.68%) Microservices
6 24 (38.10%) Spring
6 24 (38.10%) JIRA
7 20 (31.75%) Unix
7 20 (31.75%) User Stories
8 19 (30.16%) Jenkins
8 19 (30.16%) MySQL
9 18 (28.57%) SQL
9 18 (28.57%) Git (software)
10 17 (26.98%) Test Automation
10 17 (26.98%) AWS
10 17 (26.98%) Confluence
10 17 (26.98%) Kanban
11 16 (25.40%) Mentoring
11 16 (25.40%) Spring Boot
11 16 (25.40%) Scaled Agile Framework
11 16 (25.40%) SOA
12 15 (23.81%) SOAP
12 15 (23.81%) Linux
13 14 (22.22%) Public Sector
13 14 (22.22%) Coaching
14 13 (20.63%) Java 8
14 13 (20.63%) Problem-Solving
14 13 (20.63%) SoapUI
14 13 (20.63%) Web Services

TDD
Co-occurring IT Skills in Essex by Category

The follow tables expand on the table above by listing co-occurrences grouped by category. The same job type, locality and period is covered with up to 20 co-occurrences shown in each of the following categories:

Application Platforms
1 17 (26.98%) Confluence
2 11 (17.46%) Oracle SOA Suite
3 6 (9.52%) Apache
4 5 (7.94%) Mule
4 5 (7.94%) Oracle Service Bus
5 4 (6.35%) JBoss
5 4 (6.35%) WebLogic
6 2 (3.17%) Elasticsearch
6 2 (3.17%) Tomcat
Applications
1 2 (3.17%) Microsoft Excel
1 2 (3.17%) Microsoft Project
Cloud Services
1 17 (26.98%) AWS
2 4 (6.35%) Azure
3 2 (3.17%) Serverless
Communications & Networking
1 6 (9.52%) HTTP
2 4 (6.35%) Internet
2 4 (6.35%) SSL
2 4 (6.35%) TCP/IP
Database & Business Intelligence
1 19 (30.16%) MySQL
2 8 (12.70%) Oracle Database
2 8 (12.70%) SQL Server
3 5 (7.94%) Relational Database
4 4 (6.35%) BusinessObjects
4 4 (6.35%) Oracle OWB
5 3 (4.76%) MongoDB
5 3 (4.76%) Pentaho
6 2 (3.17%) Cosmos DB
6 2 (3.17%) Impala
Development Applications
1 24 (38.10%) JIRA
2 19 (30.16%) Jenkins
3 18 (28.57%) Git (software)
4 13 (20.63%) JUnit
4 13 (20.63%) SoapUI
5 8 (12.70%) Selenium
6 5 (7.94%) Checkstyle
6 5 (7.94%) JMeter
6 5 (7.94%) Subversion
6 5 (7.94%) Zephyr
7 4 (6.35%) Bitbucket
7 4 (6.35%) CA Gen
7 4 (6.35%) Team Foundation Server
8 3 (4.76%) Cucumber
8 3 (4.76%) Fiddler
8 3 (4.76%) JIRA Agile
8 3 (4.76%) Maven
8 3 (4.76%) NUnit
8 3 (4.76%) ReSharper
8 3 (4.76%) SpecFlow
General
1 14 (22.22%) Public Sector
2 12 (19.05%) Finance
3 9 (14.29%) Electronics
3 9 (14.29%) Manufacturing
3 9 (14.29%) Marketing
3 9 (14.29%) Telecoms
Job Titles
1 31 (49.21%) Developer
2 23 (36.51%) Java Developer
3 10 (15.87%) Senior Developer
4 7 (11.11%) Senior Java Developer
5 5 (7.94%) Lead Developer
5 5 (7.94%) Lead Java Developer
5 5 (7.94%) QA Tester
5 5 (7.94%) Tester
6 4 (6.35%) .NET Developer
6 4 (6.35%) Java Engineer
6 4 (6.35%) VB.NET Developer
7 3 (4.76%) Scrum Master
7 3 (4.76%) Test Manager
8 2 (3.17%) Analyst
8 2 (3.17%) Architect
8 2 (3.17%) Senior .NET Developer
8 2 (3.17%) Senior VB.NET Developer
8 2 (3.17%) Software Developer
8 2 (3.17%) Test Analyst
8 2 (3.17%) Test Engineer
Libraries, Frameworks & Software Standards
1 24 (38.10%) Spring
2 16 (25.40%) Spring Boot
3 15 (23.81%) SOAP
4 13 (20.63%) Web Services
5 10 (15.87%) Middleware
6 9 (14.29%) RESTful
7 8 (12.70%) J2EE
8 7 (11.11%) .NET
9 5 (7.94%) Apache Camel
9 5 (7.94%) Hibernate
9 5 (7.94%) JMS
9 5 (7.94%) XML
10 4 (6.35%) REST
11 3 (4.76%) .NET Core
11 3 (4.76%) GWT
11 3 (4.76%) Java EE
11 3 (4.76%) JSON
11 3 (4.76%) Swing
12 2 (3.17%) CSS
12 2 (3.17%) HTML
Miscellaneous
1 8 (12.70%) Greenfield Project
2 5 (7.94%) Hybrid Cloud
3 4 (6.35%) Client/Server
4 3 (4.76%) Management Information System
5 2 (3.17%) Mainframe
6 1 (1.59%) Clustering
6 1 (1.59%) Self-Motivation
6 1 (1.59%) User Experience
Operating Systems
1 20 (31.75%) Unix
2 15 (23.81%) Linux
3 8 (12.70%) CentOS
4 5 (7.94%) Red Hat Enterprise Linux
5 4 (6.35%) Windows
6 1 (1.59%) Mac OS X
Processes & Methodologies
1 52 (82.54%) Agile Software Development
2 30 (47.62%) Scrum
3 29 (46.03%) BDD
4 25 (39.68%) Microservices
5 20 (31.75%) User Stories
6 17 (26.98%) Kanban
6 17 (26.98%) Test Automation
7 16 (25.40%) Mentoring
7 16 (25.40%) Scaled Agile Framework
7 16 (25.40%) SOA
8 14 (22.22%) Coaching
9 13 (20.63%) Problem-Solving
10 10 (15.87%) Continuous Improvement
10 10 (15.87%) Integration Testing
10 10 (15.87%) Software Engineering
11 9 (14.29%) Business Intelligence
11 9 (14.29%) Digital Marketing
11 9 (14.29%) Performance Testing
11 9 (14.29%) Programme Management
11 9 (14.29%) Test Strategy
Programming Languages
1 39 (61.90%) Java
2 18 (28.57%) SQL
3 13 (20.63%) C
3 13 (20.63%) Java 8
4 6 (9.52%) C++
4 6 (9.52%) Perl
4 6 (9.52%) PL/SQL
4 6 (9.52%) Shell Script
5 4 (6.35%) T-SQL
5 4 (6.35%) VB.NET
6 3 (4.76%) C#
7 2 (3.17%) JavaScript
8 1 (1.59%) XPath
Qualifications
1 10 (15.87%) Security Cleared
2 9 (14.29%) ISEB
2 9 (14.29%) SC Cleared
3 8 (12.70%) ISTQB
4 7 (11.11%) OCPJP
4 7 (11.11%) Sun Certification
5 4 (6.35%) ISTQB Foundation Certification
6 2 (3.17%) Computer Science Degree
6 2 (3.17%) Degree
6 2 (3.17%) ISEB Practitioner
7 1 (1.59%) BPSS Clearance
7 1 (1.59%) ISTQB Advanced Certification
Quality Assurance & Compliance
1 9 (14.29%) QA
2 1 (1.59%) Data Quality
System Software
1 11 (17.46%) Docker
2 3 (4.76%) Virtual Machines
Systems Management
1 8 (12.70%) Ansible
2 7 (11.11%) Puppet
3 5 (7.94%) Opscode Chef
3 5 (7.94%) Terraform
4 2 (3.17%) Kibana
4 2 (3.17%) logstash
4 2 (3.17%) Mesos
5 1 (1.59%) HP Quality Center
5 1 (1.59%) Single Sign-On
Vendors
1 29 (46.03%) Oracle
2 9 (14.29%) SAP
2 9 (14.29%) WSO2
3 8 (12.70%) Red Hat
4 7 (11.11%) Sun
5 4 (6.35%) BEA
5 4 (6.35%) Informatica
5 4 (6.35%) Microsoft
5 4 (6.35%) Pega
5 4 (6.35%) Talend
5 4 (6.35%) webMethods
6 3 (4.76%) Google